Time-dependent SEDs (grey lines) of a fiducial high-state period starting after MJD 54 715 for the two scenarios discussed in text. The results for Flares A and B are shown in the left and right panels, respectively. In both panels the last SED of the low-state for the second component is also shown with black dashed line. The first component retains the same small-amplitude variability of the low-state period (black lines). For comparison reasons, the observations of the low state period are also shown.